Namespace

namespace

• in command use : --namespace=name-1 or just n=name-1
• or in definition yaml, just add metadata > namespace:name-1
• used for isolation.
• have polices:
• ResouceQuota : - to limit resource usage
• ...
• ns already added by k8s:
• kube-system
• kube-public

• default

• if having big-cluster which soo many pods, then better to create custom namespace

• namespace-1 : dev - pod-1, pod2, pod-3,etc
• namespace-2 : qa - pod-1, pod2, pod-3

• namespace-3 : prod - pod-1, pod2, pod-3

• Access services:

• can access any service in same namespace by service-name(DN)
• can access any service in different namespace using this DN format:
  • 
  • 

kubectl create ns dev-ns

apiVersion: v1
kind: Namespace
metadata:
  name: dev

kubectl create  -f  x.yaml
kubectl get pods --all-namespace